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Finding the Fourth Proportional to 101,014.08, 139,245.12 and 65,158.20

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Solution

The fourth proportional to 101,014.08, 139,245.12 and 65,158.20 is: 89,818.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,014.08 : 139,245.12 = 65,158.20 : x
  2. Step 2: Convert to fraction form
    101,014.08/139,245.12 = 65,158.20/x
  3. Step 3: Cross multiply
    101,014.08x = 139,245.12 × 65,158.20
  4. Step 4: Simplify right side
    101,014.08x = 9,072,961,377.98
  5. Step 5: Solve for x
    x = 9,072,961,377.98/101,014.08
  6. Step 6: Final answer
    x = 89,818.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.